Hardened skin care instrument



FIG. 1 is a perspective view of a hardened skin care instrument showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a cross-sectional view thereof, taken along the line 8—8 of FIG. 6. 

The ornamental design for hardened skin care instrument, as shown and described. 